Extensible metallic window-screen.



c. w. BURKHEAD.

EXTENSIBLE METALLIC WINDOW SCREEN. APPLICATION man mm: 1. :1913.

1,1 58,440. Patented Nov. 2, 1915.

.ing metallic frame screei'is CHARLES W. BURKHEAD, O33 CINCINNATI, OHIO, ASSIGiNOR TO B'URKHEAD METAL WORKING CQMPANY, OI? CINCINNATI, OHIO, A CGRPORIXTION.

EXTENSIBLE METALLIC WINDO\1SCREEI\T.

To u/Z who-m it may con/rm:

lie it known that l, (Maniacs ll; BURK- nmn, a citizen oil the Unite-(l iltatcs of America, {Hill a resident of tineinnati, in the ('()ll)lt of llamilton Ellhl State o'l (lhim have invented a rertain new ainl iiselnl linnwvi-ment in Extensible 'iiletallir ll'inllow Screens, of which the following is a specitieation.

This invention relates to wimlow-sm-ecns that are used in mljustahly and lletachahly connected pairs so as to adapt them for sliding engagement with each other to suit varions widths of windows, and the object of the invention is to provide a pair 01" Corresponth llnl connected together by means of elongatesl hey-hole slots in the upper and, lower frame-liars anal 1;: tongues or la s that are adapted to engage said elongaten Janie slots whereby the two screen-memo are tletachahly and ailjastahly llilllllll tor longitudinal slillmgr-engagement with each other and thus suited to varying willths ot window-openings and making snug or close joint with both siiles and holtozn of the windoW-framo as well as with the bottom of the windowsash that rests upon the top bars of both said screen'nieinhers in orcler to etl'ectnally shut out flies or other insects from the interior of the building.

The specific features of the invention will he tally hereinafter llescrihexl in detail and then particularly pointed out in the claims,

In the accon'ipanyinp; sheet ol' drawings, Figure 1 is an elevation of one of the se: cenineml'iers showing the engaging-lam thereof: which is a counterpart of the companion latcra lly-proje screen-member that is adjustahlv used therowith in a window-opening: Fig. 2. a fragmentary section, taken on the. dotted-line (1-, rt, of Fig. l, but on a somewhat larger srale and showing the locking-tongue together with one end of the elongated key-hole slot; Fig. 3, an elevation of one corner of the SClQlJl-Hltlllbfil' shown in Fig. lplfllt on a somewhat larger scale; Fig. i, a view similar to Fig. 3, but showing a modified. form of loclnng-t0ngne5 Fig. 5, another view similar Specification of Letters Patent.

9 are orelerahlv nan lo 'intee Patented Nov. 55,

Application filed Juno 7, 1913. Serial No. 772,25'1.

to lugs. 5 and et, but showing" a term that is a. slight but not a material modification of l fl; and lflig. (3 a transverse sect-ion taken on a lmrizonllal line with the interlockingparls of a pair of SCI'GOHIYMBHITDUXS.

1 indicates the upper horizontal framehar; 2 the lower horizontal fraznohar; 3 one of the vertical end or sii'le' liars; and the other vertical end or side bar ofa rcetangw .lar metallic window-screen, which is the I preferred type of scr'een to which in invenframe-liars 1 and 2-, provided for the pnrpose hereinafter namecl.

5 ii'nfheates the ordinary mesh screen wire who e are da ly held or clamped in the sanl four members or llllt'S l, 2, 3 am l but not in the extensions 1 and. it, of the screen-frame, each, of such nieznhers 3 rs '2 Fig. 1, the opposite ends of sairl slots 7 to niinating within the exten ions 1 anti l to provide for an intervening lateral tending tongnoor la;

Y in ii and it of the metal frame-bars 1 mill 2, re-- speelivoly. between. H e elosexl enilh otlho slots 7 and the extreme outer ends o'l' saill e70 tensions of the horizo:

anrlil.

The laterally-extenilj metal liars l and 2, being duly ontont of the metal hhi Ialaans (lies in one lefg'or limb of the ll l and ainl are nretoi'aljily 'fa'ovi'i longitudinal rib '10 to llliipi its extensions 'J iranlc mrsl strength thereto, such ribs 10 being made by the dies at the time of making the tongues or lugs 9. r

In order to form an adjust-able or extensible screen for use in windows of various widths two of the screens just described are used and interlocked by means of the engagement of the laterally-extending tongues or lugs 9 with the key-hole slots 7, the tongues 9 having round or enlarged heads that are adapted to pass into the openings 8 of the key hole slots 7 and thence further pass into the space 11 provided between the limbs or legs of the horizontal U-shape upper and lower members 1 and 2 of both screens. The body or narrow portion of the tongues or lugs 9 is of a width slightly less than that of the key-hole slots 7 so that the tongues can ride or slide freely within said slots and back' thereof in the adjustment of one screen-member along the other for effectually closing the window opening against the entrance of insects. In Fig. 2 I have shown how far the tongues or lugs 9 extend outwardly from the face ofthe uppeer and lower bars 1 and 2, (bar extension 2 being, of course, the only one shown in this view,) and the distance between said tongues and bars being slightly greater than that of the thickness of the metal so that the head of each tongue shall slide freely within the space 11 and without too intimate frictionalcont act of the engaging faces'ot' the upper and lower bars of the companion screenmembers that form the adjustable screen.

In Figs. 1 and 3 I show the tongues or lugs as having circular h aids, which form is well adapted to the purpose o'l' interlocking the two sliding screcn-mcml ers, but in Figs. 4 ands) I show tongues that have rectangular hcads whose engaging surface at either side of the elongated slots 7 is grcatcr than that of said circular form and thereby requires like rectangular entrancc-oriliccs in the slots 7. The term of tongue shown in Fig. 4 is practically T-shapc, with its head extended free from the horizontal lramc-bar extension, the same as shown in Fig. 2, but the tongue seen in Fig. 5 has a rectangular formation made transverse in the metal th rtis cut and pressed outwardly from the e tcnsion l of bar I and held integral thereto by means of the ligament l2. 'lhe t'orms of in tcrlocking-tongucs shown inwl igs. 4: and 5 are each provided with ribs '10, the same as those shown in connection with the tongues seen in l igs. 1, and ii, and. for a like reason.

The form ol interlocking device shown herein is of an cxtrcmcly simple and inexpensive nature and is very readily manipulated, both in connccting the two screens for use and for parting thcm whcn it is desired to remove them for either storage or ship ping." The fit of the two screens issuch that a close joint is provided around the edges thereof, both marginal and internal, the latter being those between the opposite ends of the two screens when in connected position for use. The extensions 1 and 2" provide for the full capacity of each screen unit or frame, so that when both screens are duly connected together they can be spread outwardly in opposite directions longitudinally until their respective bars at come in vertical contact and alincment at the perpendicular center of the window-opening, imparting greater strength and rigidity at the screen center and a much better appearance to the eye.

I.clai1n: 1. An -0Xl'.(llSll)l0 or adpistable W]I1(lOW screen comprising two screen-members each of which is provided with a rectangular adapted to engage the adjacent correspond-' ing key-hole slot through its expanded or enlarged end in the slidingattachment or intcrlocking-engagement ot' the said two screen-niembcrs for detachably and adjustably supporting the extensible-screen in a window-frame.

2. An adjustable or extensible windowscreen comprising a pair of corresponding scrccnn'icmbers each of which is composed of a pair of horizontal bars and apair of vertical side-bars that connect the opposite ends ol said horizontal bars to form a rectangular sheet-me al frame, a wire-mesh whose edges are secured in said bars of each metal l'ramc, an elongated slot provided in the engaging-lace o'l' cach 0! said horizontal bars and ha ing an enlarged or exp nded inlet and outlet opening at one end thereof, and an integral, laterall v-cxtcnding tongue or lug provided in the said cngagingl'ace of each horizontal bar at the opposite, narrow or uncxp'andcd end ol' each slot and adapted tociigage a companion enlarged inlet and "outlet opening leading to the space in each horizontal bar back of the slot therein and having a laterally-cxtcndcd head or formation that is adapted to interlock with the slotted portion ol' the contacting-i'm'cs of the companionscrccns.

3. .\n cxtcnsible or adjustable windowscrccn comprising a pair of corrcspmidiug, rectangular scrccn-mcmbers each ol which has a pair of shcct-mctal side-bars, a, pair of sheet-metal horizontal bars connecting said side-bars and having alincd upper and lower lateral-cxtcnsions at one end thcreol, a wiremcsh having its edges clamped in said l'ramc-bars, an elongated key-hole slot made in the engaging or contacting face oi" each of said horizontal bars and their 'saici upper and ment of said two-sereen-nxembersfor detaelglower lateral-extensions, and an outwardlyably and adjustably supporting the extenslprojecting tongue provided at theend of the blescreen in osition for il'se;

narrow or unexpanded end ofeach key-hole C ARLES WMBU RKHE AD. 5 slot and adapted to engage the adjacent key- Witnesses: 7 I

hole slot through its expanded or enlarged JOHN ELIAS JONES, i

' end in the interlocking and sliding engage- LORETTA LUQK. 

